Iron deficiency is the most common nutritional deficiency in Indian women — but it's almost never discussed as a hormonal issue. It disrupts thyroid function, worsens estrogen dominance, drives hair fall and fatigue, and creates a cycle that feeds on itself. Here's the full picture.
The symptoms arrive quietly, and separately.
Fatigue that sleep doesn't fix. Hair coming out in the shower in amounts that seem alarming but that you've normalised over time. Periods that have been getting heavier for months, or that leave you exhausted for days afterwards. A brain that won't cooperate — slow, foggy, unable to hold focus the way it used to. A paleness to the skin that people mention but that you attribute to stress.
These feel like five separate problems. They are, very often, one problem presenting in five different places.
Iron deficiency — the most common nutritional deficiency in Indian women — does not just make you tired. It disrupts your hormones, compromises your thyroid, worsens your menstrual symptoms, and creates a physiological cycle that feeds on itself in ways that will not resolve with a basic supplement and a reminder to eat more spinach.
Iron is most commonly understood as an oxygen carrier — the mineral in haemoglobin that transports oxygen through the blood. But iron's role extends far beyond this, into territory that is directly relevant to hormonal health.
Iron is essential for the production of thyroid hormones. The thyroid depends on iron to produce T3 and T4 — the hormones that influence nearly every system in the body. When iron levels are too low, thyroid hormone production decreases. Since thyroid hormones regulate oestrogen and progesterone levels, women with iron deficiency are at materially higher risk of menstrual irregularities and hormonal imbalance — even if their thyroid has never been formally diagnosed as dysfunctional.
Iron is also essential for liver function, and the liver is where excess oestrogen is processed and cleared from the body. When iron is low, liver detoxification slows, and excess estrogen may accumulate — leading to a state of estrogen dominance that can cause heavier periods, breast tenderness, bloating, mood instability, and worsening PMS.
And here is where it becomes a cycle rather than a single deficiency: heavy menstrual bleeding — itself often caused by hormonal imbalance or iron deficiency — further depletes iron stores, worsening anaemia and creating a self-reinforcing loop that gradually erodes both reproductive health and overall wellbeing.
Women are significantly more likely to experience iron deficiency than men, with menstrual blood loss being a primary driver. Women with heavy periods are at particular risk. In India, where dietary iron intake is already lower on average due to predominantly plant-based diets, where the bioavailability of non-haem iron is inherently limited, and where iron testing in routine health checks is often minimal, the gap between actual iron status and what women know about it is significant.
Around 50% of women tend to ignore early symptoms of anaemia — tiredness, pale skin, breathlessness, difficulty concentrating — because they have been so consistently told that these are just the symptoms of being a busy woman. They are not. They are the symptoms of a body operating without adequate iron, and that body is also, quietly, struggling to maintain healthy hormonal function.
Standard anaemia screening measures haemoglobin — the protein that carries iron in red blood cells. But haemoglobin can appear normal even when iron stores are depleted, because the body prioritises keeping haemoglobin stable at the expense of iron reserves elsewhere.
The marker that reveals iron deficiency before it progresses to full anaemia is serum ferritin — a measure of stored iron. Many women with ferritin levels that are technically "within range" but towards the lower end of that range experience the full symptom picture of iron deficiency: profound fatigue, hair fall, brain fog, low mood, and worsening hormonal symptoms.
This distinction matters because it means many women are told their iron is fine when it functionally isn't — and they continue suffering symptoms that have a straightforward, addressable cause.
Hair fall is among the most distressing and least adequately explained symptoms in this picture. Iron deficiency impairs the production of haemoglobin needed to deliver oxygen to hair follicles. When follicles are under-resourced, the hair growth cycle shortens — more hairs enter the shedding phase simultaneously, and regrowth slows. Add to this the thyroid disruption caused by low iron, and the androgen sensitivity amplified in PCOS, and what appears to be a cosmetic problem is revealed as a systemic one.
Hair fall in women in their 20s and 30s is not an inevitable part of ageing. It is, more often than not, a signal from a body that is running low on something important — and responding to it at the root level, not just with treatments applied to the scalp, is what actually changes the outcome.
At Shakti, our gynaecologists don't just look at your reports. They look at you — your lifestyle, your stress, your patterns, your history. Because most unexplained symptoms have a root cause. It just takes someone willing to find it.
If something in this resonated, you don't have to keep guessing.
Follow @heyshaktii for more honest insights into women's health. Or speak to one of our specialists — we will take the time to understand what's really going on in your body.
Book at heyshakti.com*.*
At Shakti, our specialists don't just look at your reports. They look at you - your symptoms, your history, your life. Most unexplained hormonal symptoms have a root cause. It just takes someone willing to find it.
Private Consultations | Online | Doctor-led
